Я новичок в FFmpeg и кодировании видео / аудио. Я пытаюсь использовать Свободный ffmpeg для создания видео MP4 из изображений и аудио.
Имеется только 2 входа:
Если продолжительность звука больше видео, просто отбросьте избыточную часть аудио в конце. И все изображения должны быть показаны с одинаковой продолжительностью (т.е. видео должно быть в n/d FPS для n изображений и видео с d секундами)
Так как входные данные не в количестве последовательность, я использую concat demuxer в качестве ввода:
let VIDEO_DURATION = 8;
let ffmpeg = await FfmpegUtil.createCommand();
let imageFiles: string[] = ["foo.jpg", "bar.jpg", ...]; //assume there are 67 image files
let demuxerFile = await FfmpegUtil.createConcatDemuxerFile(imageFiles);
let audioFile: string = "path/to/audio.wav";
ffmpeg.input(demuxerFile)
.inputOption(
"-f", "concat",
"-safe", "0",
)
.input(audioFile)
.outputOption(
"-r", `${imageFiles.length}/${VIDEO_DURATION}`,
)
.duration(VIDEO_DURATION)
.save("path/to/output.mp4")
;
это вызовет команду ffmpeg:
ffmpeg
-f concat
-safe 0
-i path/to/demuxerFile.txt
-i path/to/audio.wav
-y
-r 67/8
-t 8
path/to/output.mp4
Однако выходной файл не может быть воспроизведен.
Я также попытался "-framerate", ${imageFiles.length}/${VIDEO_DURATION} в .outputOption(), он по-прежнему выводит файл, который не может быть воспроизведен, и я обнаружил, что частота кадров всегда равна 25 в свойстве файла.
Обновление 1 (добавлены порожденная команда и журнал консоли ffmpeg):
порожденная команда ffmpeg и журнал консоли ("-r", `${imageFiles.length}/${VIDEO_DURATION}` as outputOption):
ffmpeg -f concat -safe 0 -i path/to/demuxerFile.txt -i path/to/audio.wav -y -r 67/8 -t 8 path/to/output_r.mp4
ffmpeg version git-2020-01-26-5e62100 Copyright (c) 2000-2020 the FFmpeg developers
built with gcc 9.2.1 (GCC) 20200122
configuration: --enable-gpl --enable-version3 --enable-sdl2 --enable-fontconfig --enable-gnutls --enable-iconv --enable-libass --enable-libdav1d --enable-libbluray --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libtheora --enable-libtwolame --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libzimg --enable-lzma --enable-zlib --enable-gmp --enable-libvidstab --enable-libvorbis --enable-libvo-amrwbenc --enable-libmysofa --enable-libspeex --enable-libxvid --enable-libaom --enable-libmfx --enable-ffnvcodec --enable-cuvid --enable-d3d11va --enable-nvenc --enable-nvdec --enable-dxva2 --enable-avisynth --enable-libopenmpt --enable-amf
libavutil 56. 38.100 / 56. 38.100
libavcodec 58. 67.100 / 58. 67.100
libavformat 58. 36.100 / 58. 36.100
libavdevice 58. 9.103 / 58. 9.103
libavfilter 7. 71.100 / 7. 71.100
libswscale 5. 6.100 / 5. 6.100
libswresample 3. 6.100 / 3. 6.100
libpostproc 55. 6.100 / 55. 6.100
Input #0, concat, from 'path/to/demuxerFile.txt':
Duration: N/A, start: 0.000000, bitrate: N/A
Stream #0:0: Video: mjpeg (Baseline), yuvj444p(pc, bt470bg/unknown/unknown), 4677x4677 [SAR 256:256 DAR 1:1], 25 tbr, 25 tbn, 25 tbc
Guessed Channel Layout for Input Stream #1.0 : stereo
Input #1, wav, from 'path/to/audio.wav':
Metadata:
artist : TextAloud: IVONA Kimberly22
date : 2018
genre : Speech
title : 38750336.mp3
album : Created: 7/26/2018 4:56:13 PM
encoder : Lavf58.16.100
encoded_by : Lame MP3
Duration: 00:00:15.57, bitrate: 705 kb/s
Stream #1:0: Audio: pcm_s16le ([1][0][0][0] / 0x0001), 22050 Hz, stereo, s16, 705 kb/s
Stream mapping:
Stream #0:0 -> #0:0 (mjpeg (native) -> h264 (libx264))
Stream #1:0 -> #0:1 (pcm_s16le (native) -> aac (native))
Press [q] to stop, [?] for help
[libx264 @ 000001e395041400] using SAR=1/1
[libx264 @ 000001e395041400] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 BMI2 AVX2
[libx264 @ 000001e395041400] profile High 4:4:4 Predictive, level 6.0, 4:4:4, 8-bit
[libx264 @ 000001e395041400] 264 - core 159 - H.264/MPEG-4 AVC codec - Copyleft 2003-2019 - http://www.videolan.org/x264.html - options: cabac=1 ref=3 deblock=1:0:0 analyse=0x3:0x113 me=hex subme=7 psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=4 threads=6 lookahead_threads=1 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=2 b_adapt=1 b_bias=0 direct=1 weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=8 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=crf mbtree=1 crf=23.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
Output #0, mp4, to 'path/to/output_r.mp4':
Metadata:
encoder : Lavf58.36.100
Stream #0:0: Video: h264 (libx264) (avc1 / 0x31637661), yuvj444p(pc, progressive), 4677x4677 [SAR 256:256 DAR 1:1], q=-1--1, 8.38 fps, 17152 tbn, 8.38 tbc
Metadata:
encoder : Lavc58.67.100 libx264
Side data:
cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: N/A
Stream #0:1: Audio: aac (LC) (mp4a / 0x6134706D), 22050 Hz, stereo, fltp, 128 kb/s
Metadata:
encoder : Lavc58.67.100 aac
frame= 3 fps=0.0 q=0.0 size= 0kB time=00:00:00.00 bitrate=N/A speed= 0x
frame= 5 fps=4.2 q=0.0 size= 0kB time=00:00:00.00 bitrate=N/A dup=0 drop=4 speed= 0x
frame= 6 fps=3.4 q=0.0 size= 0kB time=00:00:00.00 bitrate=N/A dup=0 drop=7 speed= 0x
frame= 8 fps=3.4 q=0.0 size= 0kB time=00:00:00.00 bitrate=N/A dup=0 drop=10 speed= 0x
frame= 10 fps=3.5 q=0.0 size= 0kB time=00:00:00.00 bitrate=N/A dup=0 drop=14 speed= 0x
frame= 11 fps=3.2 q=0.0 size= 0kB time=00:00:00.00 bitrate=N/A dup=0 drop=16 speed= 0x
frame= 13 fps=3.2 q=0.0 size= 0kB time=00:00:00.00 bitrate=N/A dup=0 drop=20 speed= 0x
frame= 14 fps=3.0 q=0.0 size= 0kB time=00:00:00.00 bitrate=N/A dup=0 drop=22 speed= 0x
frame= 16 fps=3.1 q=0.0 size= 0kB time=00:00:00.00 bitrate=N/A dup=0 drop=26 speed= 0x
frame= 17 fps=2.9 q=0.0 size= 0kB time=00:00:00.00 bitrate=N/A dup=0 drop=28 speed= 0x
frame= 18 fps=2.8 q=0.0 size= 0kB time=00:00:00.00 bitrate=N/A dup=0 drop=31 speed= 0x
frame= 20 fps=2.9 q=0.0 size= 0kB time=00:00:00.00 bitrate=N/A dup=0 drop=34 speed= 0x
frame= 21 fps=2.8 q=0.0 size= 0kB time=00:00:00.00 bitrate=N/A dup=0 drop=36 speed= 0x
frame= 23 fps=2.9 q=0.0 size= 0kB time=00:00:00.00 bitrate=N/A dup=0 drop=40 speed= 0x
frame= 24 fps=2.8 q=0.0 size= 0kB time=00:00:00.00 bitrate=N/A dup=0 drop=42 speed= 0x
frame= 24 fps=0.7 q=-1.0 Lsize= 752kB time=00:00:08.03 bitrate= 766.4kbits/s dup=0 drop=43 speed=0.22x
video:624kB audio:125kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.359236%
[libx264 @ 000001e395041400] frame I:1 Avg QP:12.79 size:257554
[libx264 @ 000001e395041400] frame P:15 Avg QP:13.10 size: 20487
[libx264 @ 000001e395041400] frame B:8 Avg QP:13.10 size: 9231
[libx264 @ 000001e395041400] consecutive B-frames: 45.8% 25.0% 12.5% 16.7%
[libx264 @ 000001e395041400] mb I I16..4: 18.4% 79.2% 2.4%
[libx264 @ 000001e395041400] mb P I16..4: 1.0% 3.3% 0.4% P16..4: 1.0% 0.2% 0.2% 0.0% 0.0% skip:93.9%
[libx264 @ 000001e395041400] mb B I16..4: 0.1% 0.2% 0.1% B16..8: 1.8% 0.1% 0.0% direct: 2.9% skip:94.7% L0:58.1% L1:40.2% BI: 1.7%
[libx264 @ 000001e395041400] 8x8 transform intra:75.0% inter:82.7%
[libx264 @ 000001e395041400] coded y,u,v intra: 6.1% 3.5% 4.4% inter: 0.2% 1.2% 0.5%
[libx264 @ 000001e395041400] i16 v,h,dc,p: 80% 16% 3% 2%
[libx264 @ 000001e395041400] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 46% 8% 44% 0% 0% 0% 0% 0% 0%
[libx264 @ 000001e395041400] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 29% 27% 25% 3% 3% 3% 4% 3% 3%
[libx264 @ 000001e395041400] Weighted P-Frames: Y:0.0% UV:0.0%
[libx264 @ 000001e395041400] ref P L0: 75.6% 3.3% 14.8% 6.3%
[libx264 @ 000001e395041400] ref B L0: 88.6% 10.7% 0.7%
[libx264 @ 000001e395041400] ref B L1: 98.7% 1.3%
[libx264 @ 000001e395041400] kb/s:1783.06
[aac @ 000001e3951e7f80] Qavg: 55135.730
порожденная команда ffmpeg & журнал консоли ("-framerate", `${imageFiles.length}/${VIDEO_DURATION}` как outputOption):
ffmpeg -f concat -safe 0 -i path/to/demuxerFile.txt -i path/to/audio.wav -y -framerate 67/8 -t 8 path/to/output_framerate.mp4
ffmpeg version git-2020-01-26-5e62100 Copyright (c) 2000-2020 the FFmpeg developers
built with gcc 9.2.1 (GCC) 20200122
configuration: --enable-gpl --enable-version3 --enable-sdl2 --enable-fontconfig --enable-gnutls --enable-iconv --enable-libass --enable-libdav1d --enable-libbluray --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libtheora --enable-libtwolame --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libzimg --enable-lzma --enable-zlib --enable-gmp --enable-libvidstab --enable-libvorbis --enable-libvo-amrwbenc --enable-libmysofa --enable-libspeex --enable-libxvid --enable-libaom --enable-libmfx --enable-ffnvcodec --enable-cuvid --enable-d3d11va --enable-nvenc --enable-nvdec --enable-dxva2 --enable-avisynth --enable-libopenmpt --enable-amf
libavutil 56. 38.100 / 56. 38.100
libavcodec 58. 67.100 / 58. 67.100
libavformat 58. 36.100 / 58. 36.100
libavdevice 58. 9.103 / 58. 9.103
libavfilter 7. 71.100 / 7. 71.100
libswscale 5. 6.100 / 5. 6.100
libswresample 3. 6.100 / 3. 6.100
libpostproc 55. 6.100 / 55. 6.100
Input #0, concat, from 'path/to/demuxerFile.txt':
Duration: N/A, start: 0.000000, bitrate: N/A
Stream #0:0: Video: mjpeg (Baseline), yuvj444p(pc, bt470bg/unknown/unknown), 4677x4677 [SAR 256:256 DAR 1:1], 25 tbr, 25 tbn, 25 tbc
Guessed Channel Layout for Input Stream #1.0 : stereo
Input #1, wav, from 'path/to/audio.wav':
Metadata:
artist : TextAloud: IVONA Kimberly22
date : 2018
genre : Speech
title : 38750336.mp3
album : Created: 7/26/2018 4:56:13 PM
encoder : Lavf58.16.100
encoded_by : Lame MP3
Duration: 00:00:15.57, bitrate: 705 kb/s
Stream #1:0: Audio: pcm_s16le ([1][0][0][0] / 0x0001), 22050 Hz, stereo, s16, 705 kb/s
Stream mapping:
Stream #0:0 -> #0:0 (mjpeg (native) -> h264 (libx264))
Stream #1:0 -> #0:1 (pcm_s16le (native) -> aac (native))
Press [q] to stop, [?] for help
[libx264 @ 000002460bda4740] using SAR=1/1
[libx264 @ 000002460bda4740] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 BMI2 AVX2
[libx264 @ 000002460bda4740] profile High 4:4:4 Predictive, level 6.0, 4:4:4, 8-bit
[libx264 @ 000002460bda4740] 264 - core 159 - H.264/MPEG-4 AVC codec - Copyleft 2003-2019 - http://www.videolan.org/x264.html - options: cabac=1 ref=3 deblock=1:0:0 analyse=0x3:0x113 me=hex subme=7 psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=4 threads=6 lookahead_threads=1 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=2 b_adapt=1 b_bias=0 direct=1 weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=25 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=crf mbtree=1 crf=23.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
Output #0, mp4, to 'path/to/output_framerate.mp4':
Metadata:
encoder : Lavf58.36.100
Stream #0:0: Video: h264 (libx264) (avc1 / 0x31637661), yuvj444p(pc, progressive), 4677x4677 [SAR 256:256 DAR 1:1], q=-1--1, 25 fps, 12800 tbn, 25 tbc
Metadata:
encoder : Lavc58.67.100 libx264
Side data:
cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: N/A
Stream #0:1: Audio: aac (LC) (mp4a / 0x6134706D), 22050 Hz, stereo, fltp, 128 kb/s
Metadata:
encoder : Lavc58.67.100 aac
frame= 3 fps=0.0 q=0.0 size= 0kB time=00:00:00.00 bitrate=N/A speed= 0x
frame= 6 fps=5.0 q=0.0 size= 0kB time=00:00:00.00 bitrate=N/A speed= 0x
frame= 9 fps=5.0 q=0.0 size= 0kB time=00:00:00.00 bitrate=N/A speed= 0x
frame= 12 fps=5.0 q=0.0 size= 0kB time=00:00:00.00 bitrate=N/A speed= 0x
frame= 14 fps=4.6 q=0.0 size= 0kB time=00:00:00.00 bitrate=N/A speed= 0x
frame= 16 fps=4.4 q=0.0 size= 0kB time=00:00:00.00 bitrate=N/A speed= 0x
frame= 18 fps=3.9 q=0.0 size= 0kB time=00:00:00.00 bitrate=N/A speed= 0x
frame= 20 fps=3.9 q=0.0 size= 0kB time=00:00:00.00 bitrate=N/A speed= 0x
frame= 22 fps=3.8 q=0.0 size= 0kB time=00:00:00.00 bitrate=N/A speed= 0x
frame= 23 fps=3.6 q=0.0 size= 0kB time=00:00:00.00 bitrate=N/A speed= 0x
frame= 25 fps=3.6 q=0.0 size= 0kB time=00:00:00.00 bitrate=N/A speed= 0x
frame= 27 fps=3.3 q=0.0 size= 0kB time=00:00:00.00 bitrate=N/A speed= 0x
frame= 28 fps=3.1 q=0.0 size= 0kB time=00:00:00.00 bitrate=N/A speed= 0x
frame= 30 fps=3.1 q=0.0 size= 0kB time=00:00:00.00 bitrate=N/A speed= 0x
frame= 33 fps=3.2 q=0.0 size= 0kB time=00:00:00.00 bitrate=N/A speed= 0x
frame= 36 fps=3.3 q=0.0 size= 0kB time=00:00:00.00 bitrate=N/A speed= 0x
frame= 38 fps=3.1 q=0.0 size= 0kB time=00:00:00.00 bitrate=N/A speed= 0x
frame= 39 fps=3.0 q=0.0 size= 0kB time=00:00:00.00 bitrate=N/A speed= 0x
frame= 40 fps=2.6 q=0.0 size= 0kB time=00:00:00.00 bitrate=N/A speed= 0x
frame= 41 fps=2.4 q=0.0 size= 0kB time=00:00:00.00 bitrate=N/A speed= 0x
frame= 42 fps=2.0 q=0.0 size= 0kB time=00:00:00.00 bitrate=N/A speed= 0x
frame= 43 fps=1.9 q=0.0 size= 0kB time=00:00:00.00 bitrate=N/A speed= 0x
frame= 44 fps=1.9 q=0.0 size= 0kB time=00:00:00.00 bitrate=N/A speed= 0x
frame= 45 fps=1.8 q=0.0 size= 0kB time=00:00:00.00 bitrate=N/A speed= 0x
frame= 46 fps=1.8 q=0.0 size= 0kB time=00:00:00.00 bitrate=N/A speed= 0x
frame= 47 fps=1.4 q=0.0 size= 0kB time=00:00:00.00 bitrate=N/A speed= 0x
frame= 49 fps=1.5 q=0.0 size= 0kB time=00:00:00.00 bitrate=N/A speed= 0x
frame= 50 fps=1.5 q=0.0 size= 0kB time=00:00:00.00 bitrate=N/A speed= 0x
frame= 51 fps=1.5 q=28.0 size= 0kB time=00:00:00.00 bitrate=N/A speed= 0x
frame= 51 fps=1.3 q=28.0 size= 0kB time=00:00:00.00 bitrate=N/A speed= 0x
frame= 52 fps=1.3 q=28.0 size= 0kB time=00:00:00.04 bitrate= 8.3kbits/s speed=0.00114x
frame= 53 fps=1.3 q=28.0 size= 0kB time=00:00:00.04 bitrate= 8.3kbits/s speed=0.00111x
frame= 54 fps=1.2 q=28.0 size= 0kB time=00:00:00.04 bitrate= 8.3kbits/s speed=0.00101x
frame= 55 fps=1.2 q=28.0 size= 0kB time=00:00:00.13 bitrate= 2.8kbits/s speed=0.00297x
frame= 56 fps=1.1 q=28.0 size= 0kB time=00:00:00.18 bitrate= 2.1kbits/s speed=0.00377x
frame= 57 fps=1.1 q=28.0 size= 256kB time=00:00:00.23 bitrate=9033.3kbits/s speed=0.00461x
frame= 58 fps=1.1 q=28.0 size= 256kB time=00:00:00.27 bitrate=7527.8kbits/s speed=0.00514x
frame= 59 fps=1.0 q=28.0 size= 256kB time=00:00:00.32 bitrate=6452.4kbits/s speed=0.00571x
frame= 60 fps=1.0 q=28.0 size= 256kB time=00:00:00.37 bitrate=5645.8kbits/s speed=0.00643x
frame= 62 fps=1.0 q=28.0 size= 256kB time=00:00:00.37 bitrate=5645.8kbits/s speed=0.00605x
frame= 62 fps=1.0 q=28.0 size= 256kB time=00:00:00.41 bitrate=5018.5kbits/s speed=0.00668x
frame= 63 fps=1.0 q=28.0 size= 256kB time=00:00:00.46 bitrate=4516.7kbits/s speed=0.00727x
frame= 64 fps=1.0 q=28.0 size= 256kB time=00:00:00.51 bitrate=4106.1kbits/s speed=0.00778x
frame= 65 fps=1.0 q=28.0 size= 256kB time=00:00:00.55 bitrate=3763.9kbits/s speed=0.00827x
frame= 66 fps=1.0 q=28.0 size= 256kB time=00:00:00.60 bitrate=3474.4kbits/s speed=0.00884x
frame= 67 fps=1.0 q=28.0 size= 256kB time=00:00:00.65 bitrate=3226.2kbits/s speed=0.00943x
frame= 67 fps=0.6 q=-1.0 Lsize= 872kB time=00:00:08.03 bitrate= 888.9kbits/s speed=0.0752x
video:744kB audio:125kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.391708%
[libx264 @ 000002460bda4740] frame I:1 Avg QP:15.80 size:216204
[libx264 @ 000002460bda4740] frame P:29 Avg QP:15.19 size: 10747
[libx264 @ 000002460bda4740] frame B:37 Avg QP:17.07 size: 6300
[libx264 @ 000002460bda4740] consecutive B-frames: 17.9% 14.9% 31.3% 35.8%
[libx264 @ 000002460bda4740] mb I I16..4: 11.4% 86.0% 2.6%
[libx264 @ 000002460bda4740] mb P I16..4: 0.5% 1.9% 0.2% P16..4: 0.7% 0.2% 0.1% 0.0% 0.0% skip:96.5%
[libx264 @ 000002460bda4740] mb B I16..4: 0.1% 0.2% 0.0% B16..8: 1.3% 0.2% 0.0% direct: 0.7% skip:97.5% L0:57.4% L1:40.7% BI: 1.9%
[libx264 @ 000002460bda4740] 8x8 transform intra:79.7% inter:31.4%
[libx264 @ 000002460bda4740] coded y,u,v intra: 5.7% 2.9% 3.7% inter: 0.1% 0.5% 0.2%
[libx264 @ 000002460bda4740] i16 v,h,dc,p: 70% 23% 4% 2%
[libx264 @ 000002460bda4740] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 45% 8% 45% 0% 0% 0% 0% 0% 0%
[libx264 @ 000002460bda4740] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 29% 26% 25% 3% 3% 4% 4% 3% 2%
[libx264 @ 000002460bda4740] Weighted P-Frames: Y:0.0% UV:0.0%
[libx264 @ 000002460bda4740] ref P L0: 72.6% 3.0% 16.6% 7.7%
[libx264 @ 000002460bda4740] ref B L0: 75.7% 20.6% 3.7%
[libx264 @ 000002460bda4740] ref B L1: 97.7% 2.3%
[libx264 @ 000002460bda4740] kb/s:2271.59
[aac @ 000002460bda8580] Qavg: 55135.730